MuSR技术在凝聚态物理中的应用  

Application of muon spin relaxation/rotation in condensed matter physics

作　　者：殳蕾 倪晓杰 潘子文 SHU Lei;NI Xiao-Jie;PAN Zi-Wen(State Key Laboratory of Surface Physics,Department of Physics,Fudan University,Shanghai 200433,China;Shanghai Research Center for Quantum Sciences,Shanghai 201315,China;Collaborative Innovation Center of Advanced Microstructures,Nanjing 210093,China;Laboratory for Muon Spin Spectroscopy,Paul Scherrer Institute,Villigen PSI CH-5232,Switzerland;State Key Laboratory of Particle Detection and Electronics,University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]复旦大学物理学系应用表面物理国家重点实验室,上海200438 [2]上海量子科学研究中心,上海201315 [3]人工微结构科学与技术协同创新中心,南京210093 [4]保罗谢勒研究所缪子自旋谱学实验室,菲利根CH-5232瑞士 [5]中国科学技术大学核探测与核电子学国家重点实验室,合肥230026

出　　处：《物理》2021年第4期257-265,共9页Physics

基　　金：国家重点研发计划(批准号:2016YFA0300503,2017YFA0303104);国家自然科学基金(批准号:11774061);上海市市级科技重大专项(批准号:2019SHZDZX01);上海市自然科学基金面上项目(批准号:20ZR1405300)资助项目。

摘　　要：缪子自旋弛豫/旋转(MuSR)实验技术利用缪子的自旋,在原子尺度上研究样品内部磁场的静态分布和动态涨落。文章介绍MuSR实验技术在凝聚态物理中的应用,阐述了MuSR在磁性、超导材料中发现的独特信息,包括磁有序、内部磁场分布、具有特定频率范围的自旋涨落,以及在半导体材料中获得杂质的电子状态和位置。这些应用表明MuSR对于理解关联电子材料复杂的物理现象及其物理机制具有重要意义。From the spin relaxation/rotation of 100%spin-polarized muons we can obtain the spatial distribution and dynamical fluctuations of internal magnetic fields on the atomic scale.Here we introduce various applications of the technique in condensed matter physics,including how it can be used to obtain unique information about a wide range of phenomena in magnetism and superconductivity,such as magnetic ordering,internal field distribution,spin dynamics with a unique characteristic time window,and how to obtain the electronic configurations in semiconductors.These applications demonstrate that muon spin relaxation/rotation technique is important to comprehend the novel properties and the complex physics of correlated electron systems.

关 键 词：缪子自旋弛豫/旋转 磁性 超导 半导体 

分 类 号：O469[理学—凝聚态物理]